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Derive the standard Error trait using the thiserror crate #13

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Derive the standard Error trait using the thiserror crate #13

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1 change: 1 addition & 0 deletions tree_hash/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ categories = ["cryptography::cryptocurrencies"]
ethereum-types = "0.14.1"
ethereum_hashing = "0.6.0"
smallvec = "1.6.1"
thiserror = "1.0.58"

[dev-dependencies]
rand = "0.8.5"
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4 changes: 3 additions & 1 deletion tree_hash/src/merkle_hasher.rs
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Expand Up @@ -2,12 +2,14 @@ use crate::{get_zero_hash, Hash256, HASHSIZE};
use ethereum_hashing::{Context, Sha256Context, HASH_LEN};
use smallvec::{smallvec, SmallVec};
use std::mem;
use thiserror::Error;

type SmallVec8<T> = SmallVec<[T; 8]>;

#[derive(Clone, Debug, PartialEq)]
#[derive(Error, Clone, Debug, PartialEq)]
pub enum Error {
/// The maximum number of leaves defined by the initialization `depth` has been exceed.
#[error("The maximum number of leaves {max_leaves} has beed exceed.")]
MaximumLeavesExceeded { max_leaves: usize },
}

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